SONGNOX® PQ SB by Songwon is a tetrakis(2,4-di-tert-butylphenyl)[1,1-biphenyl]-4,4’-diylbisphosphonite. Acts as a secondary antioxidant and stabilizer. It has a semi-bead form and is dust free... view more

Antioxidant FR by Songwon is 2,2,4-trimethyl-1,2-dihydroquinoline polymer-based primary antioxidant. It is used in dry rubber application to maintain physical as well as surface properties with good... view more

Antioxidant RD by Songwon is 2,2,4-trimethyl-1,2-dihydroquinoline polymer-based primary antioxidant in dry rubber application. It maintains physical and surface properties with good color, very good... view more